402127880 has 128 divisors (see below), whose sum is σ = 1137473280. Its totient is φ = 124293120.

The previous prime is 402127849. The next prime is 402127909. The reversal of 402127880 is 88721204.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 421484 + ... + 422436.

It is an arithmetic number, because the mean of its divisors is an integer number (8886510).

Almost surely, 2^402127880 is an apocalyptic number.

402127880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402127880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (568736640).

402127880 is an abundant number, since it is smaller than the sum of its proper divisors (735345400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402127880 is a wasteful number, since it uses less digits than its factorization.

402127880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119 (or 1115 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 402127880 is about 20053.1264395356. The cubic root of 402127880 is about 738.1105192601.

The spelling of 402127880 in words is "four hundred two million, one hundred twenty-seven thousand, eight hundred eighty".